| Table of contents Polibotánica n.33 México Jan. 2012 The Varronia P. Browne (Cordiaceae, Boraginales) genus in Mexico Campos-Ríos, Ma. Goreti; Chiang-Cabrera, Fernando
| | Souroubea loczyi (Marcgraviaceae) a new record for Yucatan Peninsula's Mexican portion Endañú-Huerta, Esthela; López-Contreras, José Enrique; Duno de Stefano, Rodrigo; Fernández-Concha, Germán Carnevali
| | Pteridofloristic inventory of the natural resource protection area "River Necaxa's hydrographic basin", portion Puebla, Mexico Amparo Bélgica, Cerón-Carpio; Contreras-Jiménez, José Luis; De Gante-Cabrera, Víctor Hugo
| | Lycophytes and ferns list of "Zacualtipán de Ángeles" municipality, Hidalgo, Mexico Pérez-Paredes, M.G.; Sánchez-González, A.; Tejero-Díez, J.D.
| | Following of life cycle of Woodsia mollis (Kaulf.) J. Sm. (Athyriaceae-Pteridophyta) in three natural substrates Vivero-Barón, Janet; Arreguín-Sánchez, María de la Luz; Quiroz-García, David Leonor; Fernández-Nava, Rafael; Acosta-Castellanos, Salvador
| | Tremelloid fungi of the forest Las Bayas, municipality from Pueblo Nuevo, Durango, Mexico Raymundo, Tania; Contreras, Magdalena; Bautista-Hernández, Silvia; Díaz-Moreno, Raúl; Valenzuela, Ricardo
| | Neighborhood lichens of Uruguayan Antartic Scientific Station, Collins Bay, King George Island, Antarctica Piñeiro, Verónica; Eguren, Gabriela; Pereira, Iris; Zaldúa, Natalia
| | Distribution, abundance and phenology of Orchids in a deciduous endemic forest from central Chile Bravo-Monasterio, Pablo; San Martín, José; Baeza-H., Gabriela
| | Wood vegetation at Oxpemul archeological site, Calakmul municipality, Campeche, Mexico Zamora-Crescencio, Pedro; Gutiérrez-Báez, Celso; Folan, William J.; Domínguez-Carrasco, Ma. del Rosario; Villegas, Pascale; Cabrera-Mis, Geucilio; Castro-Angulo, Claudeth Marielli; Carballo, Juan Carlos
| | Diversity, structure and composition of woody species in the Territorial Union Point (PUT) semi-deciduous forest in Yucatan, Mexico Gutiérrez-Báez, Celso; Ortiz-Díaz, Juan Javier; Flores-Guido, José Salvador; Zamora-Crescencio, Pedro
| | Characterization and ecogeographical variation of wild pepper populations (Capsicum annuum var. glabriusculum) from northwestern Mexico Hernández-Verdugo, Sergio; Porras, Flor; Pacheco-Olvera, Antonio; López-España, Ricardo Guillermo; Villarreal-Romero, Manuel; Parra-Terraza, Saúl; Osuna Enciso, Tomás
| | Vegetative propagation of three mangrove species by air-layering in the mangrove from Sontecomapan, Catemaco, Veracruz, Mexico Hernández Carmona, Saúl; Carmona Díaz, Gustavo; Ávila Bello, Carlos Héctor; Mendoza Martínez, Germán David
| | Multiple morphology and anatomy radicles in derived maize seedlings from caryopses with polyembryony Espinoza-Velázquez, José; Valdés-Reyna, Jesús; Alcalá-Rodríguez, José Manuel
| | Bioengineering using bamboo barriers to erosion control: A qualitative analysis Clayton-Barbosa, Admilson
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